package 力扣._2048_下一个更大的数值平衡树;

import java.util.Arrays;

class Solution3 {

    private static final int[] balance = new int[] {
        1, 22, 122, 212, 221, 333, 1333, 3133, 3313, 3331, 4444,
        14444, 22333, 23233, 23323, 23332, 32233, 32323, 32332,
        33223, 33232, 33322, 41444, 44144, 44414, 44441, 55555,
        122333, 123233, 123323, 123332, 132233, 132323, 132332,
        133223, 133232, 133322, 155555, 212333, 213233, 213323,
        213332, 221333, 223133, 223313, 223331, 224444, 231233,
        231323, 231332, 232133, 232313, 232331, 233123, 233132,
        233213, 233231, 233312, 233321, 242444, 244244, 244424,
        244442, 312233, 312323, 312332, 313223, 313232, 313322,
        321233, 321323, 321332, 322133, 322313, 322331, 323123,
        323132, 323213, 323231, 323312, 323321, 331223, 331232,
        331322, 332123, 332132, 332213, 332231, 332312, 332321,
        333122, 333212, 333221, 422444, 424244, 424424, 424442,
        442244, 442424, 442442, 444224, 444242, 444422, 515555,
        551555, 555155, 555515, 555551, 666666, 1224444
    };

    public int nextBeautifulNumber(int n) {
        //
        int i = Arrays.binarySearch(balance, n + 1);
        if (i < 0) {
            i = -i - 1;
        }
        return balance[i];
    }

    public static void main(String[] args) {
        Solution3 s = new Solution3();
        System.out.println(s.nextBeautifulNumber(1000000));
    }

}